Disappointed but I guess not surprised to see the small number of helicopters, armored vehicles and assault rifles provided to southern border states. Federal government appears happy to distribute heavy weapons anywhere except where they are needed most as evidenced by actual incidents.
As a resident of Arizona, I can tell you that however inefficient and/or incompetent you think the federal government's border agencies are, most of the state and county agencies in this state are far worse. I'd prefer some of them have nothing more deadly than a water pistol (especially the Maricopa County Sheriff's Office - headed by the country's most corrupt un-indicted law enforcement official). Local law enforcement officials are generally competent and savvy enough to want nothing to do with the kind of work you seem to imply they should be doing.
The equipment is distributed in response to requests from police departments. (source: http://www.nytimes.com/2014/06/09/us/war-gear-flows-to-polic...) I'm afraid you'll have to blame the locals, not the feds, for being soft on those sinister Mexicans.